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Table 1 Characteristics of the five trials included in meta-analysis

From: Different body mass index grade on the risk of developing glioma: a meta-analysis

Author Year Design Country Male Female Median follow-up (months) Median age (years) NOS
Benson [10] 2008 Cohort study UK / 646 74.4 57 ± 4.5 ******
Siegel [11] 2013 Case-control study USA 506 347 12.4 57 ± 13.3 ******
Wiedmann [8] 2013 Cohort study Norway 83 65 282 48.1 (20–101) ******
Michaud [14] 2011 Cohort study Cross-countrya 167 173 100.8 / *******
Jones [13] 2010 Cohort study USA 832 427 40 58 ******
Moore [12] 2009 Cohort study USA 341 139 98.4 / ******
  1. (aDenmark, France, Germany, Greece, Italy, the Netherlands, Norway, Spain, Sweden, and the United Kingdom)
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